ABAP Select data from SAP table CMDQIMPRULEDATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMDQIMPRULEDATA table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to CMDQIMPRULEDATA. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the CMDQIMPRULEDATA table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_CMDQIMPRULEDATA TYPE STANDARD TABLE OF CMDQIMPRULEDATA,
      WA_CMDQIMPRULEDATA TYPE CMDQIMPRULEDATA,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <CMDQIMPRULEDATA> TYPE CMDQIMPRULEDATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CMDQIMPRULEDATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CMDQIMPRULEDATA
  INTO TABLE IT_CMDQIMPRULEDATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMDQIMPRULEDATA
*  INTO TABLE @DATA(IT_CMDQIMPRULEDATA2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_CMDQIMPRULEDATA INDEX 1 INTO DATA(WA_CMDQIMPRULEDATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CMDQIMPRULEDATA ASSIGNING <CMDQIMPRULEDATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMDQIMPRULEDATA>-MANDT = 1.
<CMDQIMPRULEDATA>-MDQLTYRULEREPOSITORY = 1.
<CMDQIMPRULEDATA>-MDQUALITYRULE = 1.
<CMDQIMPRULEDATA>-MDQUALITYRULEVERSION = 1.
<CMDQIMPRULEDATA>-MDQUALITYRULEURL = 1.

ENDLOOP.

LOOP AT IT_CMDQIMPRULEDATA INTO WA_CMDQIMPRULEDATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMDQIMPRULEDATA-MDQUALITYEXTERNALRULEVERSION, sy-vline,
  WA_CMDQIMPRULEDATA-MDQUALITYRULECRTNUTCDATETIME, sy-vline,
  WA_CMDQIMPRULEDATA-MDQUALITYRULECREATEDBY, sy-vline,
  WA_CMDQIMPRULEDATA-MDQUALITYRULECREATEDBYUSRNAME, sy-vline,
  WA_CMDQIMPRULEDATA-MDQUALITYRULEVERSIONISCURRENT, sy-vline,
  WA_CMDQIMPRULEDATA-MDQUALITYRULEVERSIONVALIDITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMDQIMPRULEDATA you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_CMDQIMPRULEDATA TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_CMDQIMPRULEDATA INTO WA_CMDQIMPRULEDATA.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CMDQIMPRULEDATA_STR, 
MANDT TYPE STRING,
MDQLTYRULEREPOSITORY TYPE STRING,
MDQUALITYRULE TYPE STRING,
MDQUALITYRULEVERSION TYPE STRING,
MDQUALITYRULEURL TYPE STRING,
MDQUALITYEXTERNALRULEVERSION TYPE STRING,
MDQUALITYRULECRTNUTCDATETIME TYPE STRING,
MDQUALITYRULECREATEDBY TYPE STRING,
MDQUALITYRULECREATEDBYUSRNAME TYPE STRING,
MDQUALITYRULEVERSIONISCURRENT TYPE STRING,
MDQUALITYRULEVERSIONVALIDITY TYPE STRING,
MDQUALITYRULEDESC TYPE STRING,
MDQUALITYRULELONGTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMDQIMPRULEDATA_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_CMDQIMPRULEDATA_STR-MANDT sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQLTYRULEREPOSITORY sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYRULE sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYRULEVERSION sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYRULEURL sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYEXTERNALRULEVERSION sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYRULECRTNUTCDATETIME sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYRULECREATEDBY sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYRULECREATEDBYUSRNAME sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYRULEVERSIONISCURRENT sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYRULEVERSIONVALIDITY sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYRULEDESC sy-vline 
WA_CMDQIMPRULEDATA_STR-MDQUALITYRULELONGTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.